84713931 has 12 divisors (see below), whose sum is σ = 126896952. Its totient is φ = 56475792.

The previous prime is 84713921. The next prime is 84713939. The reversal of 84713931 is 13931748.

It is a happy number.

It is not a de Polignac number, because 84713931 - 2⁷ = 84713803 is a prime.

It is a super-2 number, since 2×84713931² = 14352900210945522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84713939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174066 + ... + 174551.

It is an arithmetic number, because the mean of its divisors is an integer number (10574746).

Almost surely, 2^84713931 is an apocalyptic number.

84713931 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

84713931 is a deficient number, since it is larger than the sum of its proper divisors (42183021).

84713931 is an equidigital number, since it uses as much as digits as its factorization.

84713931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348632 (or 348620 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 84713931 is about 9204.0171121093. The cubic root of 84713931 is about 439.1891592326.

The spelling of 84713931 in words is "eighty-four million, seven hundred thirteen thousand, nine hundred thirty-one".